US2846148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air heating system
Assignee: Motors Liquidation Co
•
Filing: 1955-08-19
•
Granted: 1958-08-05
•
Expires: 1975-08-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Dilworth
- 👤 Jr Max Ephraim
- 👤 John T Ialeggio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:25
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/153; B; B61; B61D; B61D27/00; B61D27/0018; F24F3/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2179873A
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US2241070A
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US2241060A
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US2341781A
Cited
US2291029A
Cited
US2388210A
Cited
US2715515A
Cited
US2700505A
Cited
US2749048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |